South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-56 - ONSITE WASTEWATER SYSTEMS
Section 61-56.103 - Onsite Wastewater Systems

Universal Citation: SC Code Regs 61-56.103

Current through Register Vol. 48, No. 9, September 27, 2024

103.1. General.

(1) Each dwelling, business, or other structure occupied for more than two (2) hours per day shall be provided with an approved method for the treatment and disposal of domestic wastewater.

(2) It shall be the responsibility of the property owner to ensure that a permit to construct and operate any new, upgraded, or expanded onsite wastewater system, nonwater-carried sewage treatment system, wastewater combustion system, or gray water subsurface reuse system is obtained from the Department prior to construction and operation of the system.

(3) No person shall begin construction of a dwelling, business, or other structure to be served by an onsite wastewater system, nonwater-carried sewage treatment system, wastewater combustion system, or gray water subsurface reuse system until a permit to construct and operate such a system is issued by the Department.

Mobile or modular structures intended for occupancy shall not be moved onto the site until the permit to construct and operate an onsite wastewater system has been issued.

(4) The property owner shall be required to properly operate and maintain in good working order all onsite wastewater system(s) and their parts and to comply with all terms and conditions of a previously issued permit. System parts may include, but are not limited to, sealed watertight tanks, lid(s), piping, aggregate, pump, and pump components.

(5) An onsite wastewater system serving more than one (1) piece of deeded property shall be considered as a community or cluster collection and treatment system and shall comply with the following:
(a) A permit activity will not occur that is inconsistent with a plan or plan amendment approved under section 208(b) of the Clean Water Act unless the Department finds such variance necessary to protect the public's health, safety, and welfare.

(b) If a public entity owns the system, the entity shall be responsible for the operation, maintenance, and replacement of all components unless otherwise approved by the Department. The Department may consider a request from a private entity or person; however, such proposals must be evaluated on a case-by-case basis. The Department will evaluate the capability of long-term, reliable system operation in its evaluation of a permit request.

(c) If the project is owned by a private entity or person, the Department shall require financial assurances for the operation, maintenance, and replacement of the tank(s) and subsurface wastewater infiltration area system and relevant collection/pumping components.

(d) Sufficient area meeting the minimum requirements for large onsite wastewater systems shall be provided for at least one hundred (100) percent repair or replacement of the primary subsurface wastewater infiltration area.

(e) The collection sewer and pumping portions of a community onsite wastewater system shall receive a separate Construction Permit under R.61-67.300, Standards for Wastewater Facility Construction.

103.2. Large (greater than 1500 gpd) and community onsite wastewater systems incorporating advanced treatment methods, including but not limited to aerobic pre-treatment, lagoons, surface or subsurface drip irrigation, low pressure pipe distribution and other maintenance intensive methods, shall be required to obtain a Land Application Permit under R.61-9, Water Pollution Control Permits.

103.3. Facilities that generate industrial process or any other non-domestic wastewater shall not be granted a permit under this regulation unless the Department determines that the proposed discharge would not pose a significant environmental risk. In such a determination, the Bureau of Water would determine if the waste may cause a violation of any drinking water standard under R.61-58, State Primary Drinking Water Regulations, or may otherwise adversely affect the health of persons regardless of whether or not the wastewater is to be discharged continuously or intermittently to the onsite wastewater system. Plumbing appurtenances that facilitate the transport of such wastewater, including floor drains, trench drains, utility sinks, equipment drains, or any other conduit shall not be installed in facilities served by onsite wastewater systems unless specifically approved by the Department as a result of the above-described determination.

103.4. Campgrounds.

(1) Onsite wastewater systems serving campgrounds shall comply with all applicable requirements of this regulation. Such campgrounds shall be provided with adequate toilet and bathing facilities, except in those cases where all campsites are furnished with individual sewer service connections, and each site is exclusively designated for use by camping units equipped to access such connections.

(2) Individual sewer service connections shall be part of an approved sewage collection system and shall be equipped with removable, tight fitting covers.

(3) Where individual sewer service connections are not furnished at all campsites, an approved sanitary dump station(s) shall be provided at a convenient location(s) within the campground at the ratio of one (1) dump station per one hundred (100) campsites or fractions thereof.
(a) A dump station shall consist of one (1) or more trapped four (4) inch sewer risers surrounded by a concrete apron having a diameter of at least two (2) feet and sloped to drain. Sewer risers must be equipped with removable, tight fitting covers.

(b) Each dump station shall be equipped with pressurized water to be used for washing the concrete apron. The water outlet shall be protected from back siphonage by a vacuum breaker installed at its highest point, or by other approved means. A sign shall be placed at this water outlet stating: THIS WATER IS FOR CLEANING PURPOSES ONLY.

Disclaimer: These regulations may not be the most recent version. South Carolina may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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